John III of Egmont (or Egmond) (Hattem, 3 April 1438 – Egmond, 21 August 1516) was first Count of Egmont, Lord of Baer, Lathum, Hoogwoude, Aarstwoude, Purmerend, Purmerland and Ilpendam, and Stadtholder of Holland, Zeeland and West-Friesland.
When Charles the Bold came to power in Guelders, John was made bailiff of West-Friesland and governor of Arnhem in 1474.
For his role in the Hook and Cod wars, Maximilian of Austria made him Stadtholder of Holland, Zeeland and West-Friesland in 1483, a function he held until 1515.
In 1491 he was confronted with the Bread and Cheese Revolt, a popular uprising in West-Friesland, which he crushed with the support of Albert III, Duke of Saxony.
John married in 1484 with Magdalena van Werdenburg, a cousin of Maximilian of Austria, and had 10 children, amongst whom: